Motor-opkrated window



Filed Dec. 10', 1924 2 Sheets-Sheet 1 1\'|||ll|llllllullllllllvllllll INVEN TOR.

NILES bLARsl-IN. M Y I KNWWQSWTORNEYS.

1,635,519 July 19 1927' LARSEN MOTOR OPERATED WINDOW Filed-Deb. 10, 19242 Sheets-Sheet 2 IN V EN TOR.

NILES L.LARSEN Patented July 19, 1927.

" NITED sr Te-s 1,636 PA EN IOFFWEP ms L. Luann, or omnua, cur-roams.

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Application filed fieoember 10, 1924. Serial 30.7512070.

My invention is an improved arrangement for ralsmg and lower1ng aWlIldOW and 1s particularly adapted to operating windows.

[ in in the lower panel of the door and .it is raised and lowered insome cases b a long screw upon which a nut travels, t e screw beingoperated by a crank and the nut being connected to the sash. Myinvent1on comprehends mounting an electric motor 1n the bottom of thelower panel of the door,.- mounting a worm 1 on its shaft, driving aworm wheel on the vertical screw and the variouselectrical andmechanical devices to control the operation. 2

My lnvention will be more readily understood from the followingspecification and drawings in which Figure 1 is an elevation of a dooror other frame showing a sliding sash and my electrical mechanism forraising and lowering the sash.

Figure 2 is a vertical section of Fi re 1 on the line 2-2 inithedirection of t e arrows, showing the electrical and manual arswitch toreverse .t

.rangement for operating the vertical screw,

which lifts or lowers the sash. s

Figure 3' is a vertical section of Fi re 1 on the line 3-3 in thedirection of t e arrows, showing the cam for disconnecting the screw. Iv

Figure 4 is a lan view of the shding plate removed. Figpre 5 is alongitudinal section of the switc on the lines 5-5 Figure 4.

. Figure 6 is a diagrammatic sketch of the electric circuits.

In the drawin s, the door 1 is of the usual type of automobile door,with a sliding sash 2 illustrated as a sheet of glass. A grooved bracket3 engages the lower edge 4 of the glass and has a nut formed in itscentral part 5 through which passes a long screw 6 to e motor, showingthe top raise and lower the sash. The screw 6 hasv a bearing 7 at itslower end, preferably formed of a plate 8 having a socket 9: abd theupper end of the screw is mounted in a hearing 10 fastened to the crossbar 11 by screws or rivets 12.

The screw 6 is rotated by the electric motor 13, which has a worm 14 onits shaft 15 engaging a gear 16 keyed to the lower end ofthe screw. Thescrew may also be manually rotated by the bevel pinion 17 engaging thebevel gear 18 fastened to the upper end of the screw, in a mannerhereafter described.

The electric circuit for the motor is as follows: referring to Figure 6:-The positive side of the circuit isindicated by the lead 19,connecting through the main switch 20 to the sliding switch 21, havingcentral terminals 22 and 23, forward terminals 24 and 25 and reverseterminals 26 and 27. The forward rotation of the motor signifies anelevating motion of the window and a reverse rotation alowering'thereof.

Fuller details. of .the sliding switch are shown in Figures 5 and 6 inwhich :The terminals, 22, 23, 24, 25, 26 and 27 are shown as plugspressed upward by similiar sprin 28 in sockets 29 in an insulating base30, in which is screwed a series of connectors 31 having apertures 32for the various lead wires and screws 33 in the connectors to bind thewires. A sliding conducting plate 34 and opposite plate 34 are mountedon to of the base and have a series of she ow depressions 35 to engagethe various terminals. The plates are shown withan insulating top 36 anda handle 37 and are retained in position by the insulating cover 38,having a slot 39 for the handle, the cover being secured to the base 30by the insulating rim 40 and screws 41.

The operation of the sliding switch is as follows 1 By means of thehandle 37 the conducting plates 34 may be slid to the left or right atthe left making a connection throu h eit er plate to the center and lefttermina 22 and 24 and 23 and 25 respectively, at the left the connectionis through terminals 22 and 26 and 23 and 27 respectively.

Returning to the electrlc circuits of Figure 6 When the sliding switch21- is moved to the left it uts the motor in forward operation to liftthe window by circuit from main switch 20, lead 42, terminal 22, plate34, terminal 24, leads 43 and 44, field winding 45 leads 46 and 47, topautomatic switch 48, lead 49, terminal 25, sliding plate 34',- centerterminal 23, lead 50 to the motor armature 51 and negative side of thecircuit 52, thus causing the motor to turn forward and lift the window.When the sash reaches the top position finger 53 on the bracket 3strikes the plunger 54 of the top automatic switch 48 and opens it,thereby breaking the circuit and stopping the motor. When it is desiredto lower the sash the sliding switch 21 is moved to the right, whichestablishes a circuit from main switch 20, lead 42, terminal 22, slidingplate 34, terminal 26, lead 55, lead 46, through field windings 45 inthe reverse direction, leads 44 and 56, bottom automatic switch 57, lead58, terminal 27, sliding plate 34, center terminal 23, lead 50, motorarmature 51 and to the negative side of the circuit 52. Thus causing themotor to turn reverse and lower the sash. When the sash reaches thebottom position finger 59 on the bracket 3 strikes the plunger 60 of thebottom automatic switch 57 and opens it thereby breaking the circuit andstopping the motor. v

The top and bottom automatic switches 48 and 57 are of an ordinary typeand remain I open only when theirplungers 54 and 60 are pressed in, thesprings 61 otherwise closing the switches. The sash may be moved andretained in any desired position by placing the sliding switch 21 inneutral or midposition or by manually opening the main switch 20.

The sash may be raised and lowered by manual mechanism, if desired asfollows The bevel pinion 17 (see Figs. 1, 2 and 3) is journalled on arocking bar 65, pivotally mounted by a pintle 66, secured to the crossbar 11 and has an operating crank 67. The bevel pinion is normally heldin the upper position, by the spring 68, tensioned between the bar 65and the door frame or housing of the sash. When the bar is de ressed itsbevel edge 69 bears against the evel 70 of the sliding lock rod 71 andpushes this to the right in a ertures 72 and 73 in the lugs 74 and 75 onracket 76 secured to the cross bar 11, against the compression spring 77between the lug 75 and a collar 78 on the rod 71. After the hevels havepassed each other the rod 71 is forced to the left and holds the rockbar 65 depressed, until the handle 79 is moved to the right.

This action ralses the cam rod 80. which is pivotally connected to oneend 81 of the rock bar 65, and opens the main switch 20 by moving theswitch lever 82 by the finger 83 on the bar against the spring 84 toopen the switch. The cam 85 on the cam rod, which has sliding movementin the socket 86 at the bottom of the frame, contacts with the shaft 15of the motor 13 and causes it to swivel on its base 87, in an ordinaryway, and disengage the worm 14 from the worm gear 16 of the longscrew 6.A sprin 88 lensioncd between the motor frame and t 1e door frame or sashhousing normally retains the connecting worms in engagement. Turning thecrank 67 will, when the above described adjustment is made, raise andlower the sash through the bevel pinion 17 and bevel gear 18 on the longscrew 6 in the usual manner.

My invention may be considerably changed or modified to suit variouskinds of windows without departing from the spirit thereof.

Having described my invention what I claim is:-

1. In a window having a frame, a sash slidable therein, a vertical screwhaving a screw threaded connection with the sash, gears on the top andbottom of the screw, means to support the screw invthe frame, a motor inthe frame having a gear engaging the said bottom gear, a manuallyoperated gear to engage the said top gear and means to connect the topor the bottom'set of gears.

2. In a motor operated window a frame, a sash slidable therein, avertical screw operatively connected to the sash, gears on the top andbottom of the screw, 21 motor having a gear adapted to mesh with thebottom gear, a pivotal mounting for the motor in the frame, a rodslidable in the frame and a cam on the rod to. swivel the motor, and amanually operated gear mounted in the frame to engage the top gear onthe screw.

3. In a. motor operated window a frame, a sash slidable therein, avertical screw 0 eratively connected to the sash supported 1n the frame,a motor pivoted in the base of the frame, gearing between the motor andthe screw, a rock bar pivoted to the frame, a cam rod with a cam thereonconnected to the rock bar, a gear on the top of the screw, a gearmounted on the rock bar and manually operated means to rock the rockbar, swing the motor on its pivot to disengage the gearing between themotor and the screw and to engage the gear on the top of the screw andthe gear mounted on the rock bar.

4. In combination with a sliding window, a supporting bracket therefor,a screw for raising and lowering said bracket, an electric motor foroperating said screw and means for disengagingsaid motor from said screwto permit the window to be operated manually.-

5. In combination with asliding window, a supporting bracket therefor, avertical screw in threaded connection with said bracket, electric meansto operate said screw, a crank for manually operating said screw andmeans operatively connected with said crank to disengage said electricmeans from said screw.

6. In combination with a, sliding window, means for raising and loweringsaid window, a motor for actuating said window raising and loweringmeans, and manually controlled means for actuating said window raisingand lowering means, said manually actuated means disengaging said motorfrom said window raising and lowering means;

7. A device of the type described comprising a sliding window, a screwoperatlvely connected to said window for raising and lowering saidwindow, a motor operatively connected to said screw for rotating saidscrew in either direction, a switch connecting said motor with a sourceof power for causing said motor to rotate "in either direction, stopswitches actuated by the moving win-- dow for disconnecting said motorfrom the source of power after the window has trav eled betweenpredetermined limits, manually controlled means fol-actuating saidscrew, and means connecting said manually controlled means with saidmotor for disconnecting said motor from said screw when said manuallycontrolled means is operated.

In testimony whereof I allix my signature.

NILES L. LARSEN.

